CN221305470U

CN221305470U - Insulation protection device of split spacer for power transmission and transformation line

Info

Publication number: CN221305470U
Application number: CN202322951241.1U
Authority: CN
Inventors: 黎翔发; 郭庆昌; 黎钧发; 黎绮雯; 郭晓晖
Original assignee: Foshan Xiangjian Rubber And Plastic Products Co ltd
Current assignee: Foshan Xiangjian Rubber And Plastic Products Co ltd
Priority date: 2023-11-01
Filing date: 2023-11-01
Publication date: 2024-07-09
Anticipated expiration: 2033-11-01

Abstract

The utility model discloses an insulation protection device of a split conductor for a power transmission and transformation line, which comprises an insulation protection sleeve and two insulation sealing plates, wherein the two ends of the insulation protection sleeve are respectively provided with the two insulation sealing plates, the split conductor is provided with a first clamping groove and a second clamping groove, the first clamping groove and the second clamping groove of the split conductor are respectively provided with two split conductors which are symmetrically distributed, the insulation protection sleeve is wrapped outside the split conductor and the split conductor which is positioned near the split conductor, each insulation sealing plate is provided with a first through hole and a second through hole, and the two split conductors respectively pass through the first through hole and the second through hole of each insulation sealing plate, so that the two insulation sealing plates are arranged at the two ends of the insulation protection sleeve. The split conductor and the split spacer can be sealed in the insulating sleeve through the insulating protective sleeve and the insulating sealing plates at the two ends of the insulating protective sleeve, so that the split conductor and the split spacer are integrally insulated.

Description

Insulation protection device of split spacer for power transmission and transformation line

Technical Field

The utility model relates to the technical field of power transmission and transformation lines, in particular to an insulation protection device of split spacers for a power transmission and transformation line.

Background

In an overhead transmission line, conductor split spacers have a fitting for fixing the spacing between overhead bare conductors to prevent the overhead bare conductors from whipping against each other, to suppress breeze vibration and sub-span vibration, and the like.

In existing overhead transmission lines, in order to avoid the risk of single-phase to ground or three-phase short circuits. Such as: the overhead naked bus in the transformer substation, especially the steel beam of the portal frame and the anti-bow naked wire below the overhead naked bus are easy to generate single-phase grounding due to insufficient safety distance caused by floating objects, bird nests or large birds approaching, even three-phase short circuit faults are caused, and insulation wrapping treatment is usually required to be carried out on the power transmission and transformation overhead naked wire in a high-risk area.

However, in the existing overhead transmission line structure, only the transmission and transformation split conductors are subjected to insulation treatment, but the conductor split spacers between the conductors are not subjected to insulation treatment, and the problems of single-phase grounding, three-phase short circuit fault and the like caused by insufficient safety distance due to the approach of floaters, bird nests or large birds can occur.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model provides the insulation protection device which has the advantages that the split conductor and the split spacer are insulated integrally, the split spacer has good protection effect, the insulation level and the insulation capability between the split conductor and the split spacer are improved, the risk of single-phase or three-phase short circuit caused by external factors is reduced, the split spacer is not contacted by foreign matters in a sealing environment, the risk of single-phase or three-phase short circuit is reduced, the safe operation of a power grid can be ensured, the whole insulation protection device is very convenient to install, the insulation protection device adopts an open design, the installation and the maintenance can be carried out rapidly during the power failure maintenance, and the maintenance is very convenient.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The utility model provides an insulating protection device of split conductor spacer for power transmission and transformation circuit, includes the insulating protection device that has the effect of split conductor spacer in the protection power transmission and transformation circuit, insulating protection device includes insulating protection sleeve and two insulating shrouding, two insulating shrouding are installed respectively at insulating protection sleeve's both ends, first double-layered groove and second double-layered groove have been seted up to the split conductor spacer, first double-layered groove and second double-layered groove mutual interval arrangement, split conductor spacer's first double-layered groove and second double-layered groove are equipped with two split conductors of symmetric distribution respectively, insulating protection sleeve parcel is at split conductor spacer and the outside of the split conductor that is located the split conductor spacer nearby, has seted up first through-hole and second through-hole on every insulating shrouding, first through-hole and second through-hole mutual interval arrangement, two split conductor pass first through-hole and the second through-hole of every insulating shrouding respectively in order to install two insulating shrouding at insulating protection sleeve's both ends.

Further, the insulating protective sleeve comprises an insulating protective sleeve and a cavity structure positioned in the insulating protective sleeve, wherein the insulating protective sleeve is provided with a sleeve opening used for enabling the split conductor and the split spacer to enter and exit the cavity structure, and the sleeve opening is communicated with the cavity structure.

Further, the sleeve opening is provided with a buckle assembly, the buckle assembly comprises a plurality of buckles which are arranged at intervals, and clamping holes which correspond to the buckles in number and in position, the buckles are located at one end of the insulating protection barrel and are axially arranged along the sleeve opening, the buckles extend from one end of the sleeve opening to the other end of the sleeve opening, the clamping holes are located at the other end of the insulating protection barrel, opposite to the insulating protection barrel, in the positions of the buckles, and the buckles are inserted into the clamping holes so as to fasten the sleeve opening.

Further, the split spacer comprises a first wire clamp and a second wire clamp, the first wire clamp is arranged above the second wire clamp, the first wire clamp is provided with a first upper half-arc wire groove and a second upper half-arc wire groove, the opposite inner side surfaces of the second wire clamp and the first wire clamp are respectively provided with a first lower half-arc wire groove and a second lower half-arc wire groove, the first upper half-arc wire groove and the first lower half-arc wire groove are vertically communicated to form a first clamping groove, and the second upper half-arc wire groove and the second lower half-arc wire groove are vertically communicated to form a second clamping groove.

Further, the split spacer comprises a fastening bolt and a fastening nut, the first wire clamp is provided with an upper fixing hole, the second wire clamp and the upper fixing hole of the first wire clamp are correspondingly arranged in the lower fixing hole, and the fastening bolt penetrates through the upper fixing hole of the first wire clamp to the lower fixing hole of the second wire clamp and is fixed by the fastening nut.

Further, the split conductor comprises a conductor insulation sleeve and an overhead bare conductor, wherein the conductor insulation sleeve is provided with a cavity for the conductor to pass through, and the overhead bare conductor passes through from the cavity of the conductor insulation sleeve so that the conductor insulation sleeve is sleeved outside the overhead bare conductor.

Further, two ends of the split conductor are respectively connected with 35kV sleeves.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The insulation protection device comprises an insulation protection sleeve and two insulation sealing plates, wherein the two ends of the insulation protection sleeve are respectively provided with the two insulation sealing plates, the split spacing rod is provided with a first clamping groove and a second clamping groove which are mutually arranged at intervals, the first clamping groove and the second clamping groove of the split spacing rod are respectively provided with two split wires which are symmetrically distributed, the insulation protection sleeve is wrapped outside the split spacing rod and the split wires which are positioned nearby the split spacing rod, each insulation sealing plate is provided with a first through hole and a second through hole, and the two split wires respectively penetrate through the first through hole and the second through hole of each insulation sealing plate, so that the two insulation sealing plates are arranged at the two ends of the insulation protection sleeve. The split conductor and the split spacer can be sealed in the insulating sleeve through the insulating protective sleeve and the insulating sealing plates at the two ends of the insulating protective sleeve, so that the split conductor and the split spacer are integrally insulated, the insulating protective sleeve provided by the utility model not only can protect the split spacer, but also can improve the integral insulating level and capability of the split conductor and the split spacer, and the split spacer can be sealed in the insulating protective sleeve so as to ensure that the metal part of the split spacer is not exposed and can not touch foreign matters, thereby reducing the risk of forming single-phase grounding and three-phase short circuits, ensuring the safe operation of a conveying line where a power grid is located, ensuring the safe operation of the power grid, and the insulating protective sleeve provided by the utility model can be repeatedly used, and improving the utilization rate of resources.

(2) The insulating protective sleeve comprises an insulating protective sleeve and a cavity structure positioned in the insulating protective sleeve, wherein the insulating protective sleeve is provided with a sleeve opening, the sleeve opening is provided with a buckle assembly, the buckle assembly comprises a plurality of buckles which are distributed at intervals, and a plurality of buckle holes which correspond to the buckles in number and position, the buckle is positioned on one end of the sleeve and is axially arranged along the sleeve opening, the buckle extends from one end of the sleeve opening to the other end, the buckle hole is positioned on the other end of the sleeve opposite to the sleeve position where the buckle is positioned, and the buckle is inserted into the buckle hole so as to fasten the sleeve opening. The insulation protection barrel is of an open type design, can be quickly installed and overhauled when power is cut and overhauled, and is very convenient to detach and install the split conductor and the split spacer from the insulation protection barrel during maintenance, so that the installation and detachment efficiency is improved.

(3) The insulating protective sleeve comprises the insulating protective sleeve, and the insulating protective sleeve is made of insulating materials, so that the insulating protective sleeve can play a good insulating role on the split conductor and the split spacer, and can play a good protective role on the split spacer.

Drawings

FIG. 1 is a view showing the state of use of the insulating protective sleeve of the present utility model in a power transmission and transformation line;

FIG. 2 is a schematic illustration of an insulating protective sleeve wrapped split spacer clip of the present utility model;

FIG. 3 is an exploded view of the insulating protective sleeve of the present utility model;

FIG. 4 is a schematic view of an insulation casing according to the present utility model;

FIG. 5 is a schematic diagram of a second embodiment of an insulation sleeve according to the present utility model;

FIG. 6 is a schematic view of the structure of an insulation sleeve of the present utility model;

FIG. 7 is a schematic diagram of a split spacer and split conductor relationship of the present utility model;

FIG. 8 is a second schematic diagram of a split spacer and split conductor relationship according to the present utility model;

FIG. 9 is a schematic view of the structure of a split spacer of the present utility model;

Fig. 10 is a schematic view of the split conductor structure of the present utility model;

Fig. 11 is a schematic structural diagram of a split conductor in a second embodiment of the present utility model.

In the figure: the insulation protection sleeve 1, the insulation protection sleeve 11, the cavity structure 12, the sleeve opening 13, the buckle assembly 14, the buckle 141, the clamping hole 142, the insulation sealing plate 2, the split spacer 3, the first clamping groove 31, the second clamping groove 32, the first wire clamp 33, the first upper semi-arc-shaped wire groove 331, the second upper semi-arc-shaped wire groove 332, the second wire clamp 34, the first lower semi-arc-shaped wire groove 341, the second lower semi-arc-shaped wire groove 342, the fastening bolt 35, the fastening nut 36, the split conductor 4, the conductor insulation sleeve 41, the overhead exposed conductor 42, the notch 43, the wire groove 44, the wavy bulge 45 and the 35kV sleeve 5.

Detailed Description

The present utility model is described in detail below with reference to the accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the principles of the utility model by way of example, and, together with the description, serve to explain the principles of the utility model. In the drawings to which reference is made, the same or similar components in different drawings are denoted by the same reference numerals.

As shown in fig. 1-9, a first embodiment of the present utility model provides an insulation protection device for a split conductor 33 for a power transmission and transformation line, which has the function of protecting the split conductor 33 in the power transmission and transformation line, the insulation protection device of the present utility model includes an insulation protection sleeve 1 and two insulation sealing plates 2, two insulation sealing plates 2 are respectively installed at two ends of the insulation protection sleeve 1, the split conductor 33 is provided with a first clamping groove 31 and a second clamping groove 32, the first clamping groove 31 and the second clamping groove 32 are mutually spaced, the first clamping groove 31 and the second clamping groove 32 of the split conductor 33 are respectively provided with two split conductors 4 symmetrically distributed, the split conductor 4 is fixed on the split conductor 33 through the first clamping groove 31 and the second clamping groove 32, the insulation protection sleeve 1 is wrapped outside the split conductor 33 and the split conductor 4 located near the split conductor 33, each insulation sealing plate 2 is provided with a first through hole and a second through hole, the first through hole and the second through hole are mutually spaced, the two split conductors 4 respectively pass through the first insulation sealing plates 2 and the second insulation sealing plates 2 to seal the split conductor 4 at two ends of the insulation protection sleeve 1. The split conductor 4 and the split spacer 33 can be sealed in the insulating sleeve through the insulating protective sleeve 1 and the insulating sealing plates 2 at the two ends of the insulating protective sleeve, so that the split conductor 4 and the split spacer 33 are integrally insulated, the insulating protective sleeve 1 provided by the utility model not only can protect the split spacer 33, but also can improve the insulation level and the insulation capacity of the split conductor 4 and the split spacer 33, and the utility model can ensure that the metal part of the split spacer 33 is not exposed and cannot touch foreign matters through sealing the split spacer 33 in the insulating protective sleeve 1, thereby reducing the risk of forming single-phase grounding and three-phase short circuits and ensuring the safe operation of a conveying line where a power grid is located.

The insulation protection sleeve 1 comprises an insulation protection sleeve 11 and a cavity structure 12 positioned in the insulation protection sleeve 11, the insulation protection sleeve 11 is provided with a sleeve opening 13 for leading a split conductor 4 and a split spacer 33 to enter and exit the cavity structure 12, the sleeve opening 13 is communicated with the cavity structure 12, the sleeve opening 13 is provided with a clamping buckle assembly 14, the clamping buckle assembly 14 comprises a plurality of clamping buckles 141 which are mutually arranged at intervals and clamping holes 142 which are corresponding to the clamping buckles 141 in number and position, the clamping buckles 141 are positioned on one end of the insulation protection sleeve 11 and axially along the sleeve opening 13, the clamping buckles 141 extend from one end to the other end of the sleeve opening 13, the clamping holes 142 are positioned at the other end of the insulation protection sleeve 11 opposite to the position of the insulation protection sleeve 11 where the clamping buckles 141 are positioned, and the clamping buckles 141 are inserted into the clamping holes 142 so as to fasten the sleeve opening 13. In particular, the insulation casing 11 of the present utility model is made of an insulation material, which may be one of polyurethane, polyvinyl chloride, low density polyethylene, medium density polyethylene, high density polyethylene, low smoke zero halogen polyethylene, polytetrafluoroethylene, silicone rubber, and EPDM.

The split spacer 33 of the present utility model comprises a first wire clamp 33 and a second wire clamp 34, wherein the first wire clamp 33 is installed above the second wire clamp 34, the first wire clamp 33 is provided with a first upper semi-arc wire groove 331 and a second upper semi-arc wire groove 332, opposite inner side surfaces of the second wire clamp 34 and the first wire clamp 33 are respectively provided with a first lower semi-arc wire groove 341 and a second lower semi-arc wire groove 342, the first upper semi-arc wire groove 331 and the first lower semi-arc wire groove 341 are vertically penetrated to form a first clamp groove 31, the second upper semi-arc wire groove 332 and the second lower semi-arc wire groove 342 are vertically penetrated to form a second clamp groove 32, the split spacer 33 of the present utility model comprises a fastening bolt 35 and a fastening nut 36, the first wire clamp 33 is provided with an upper fixing hole, the second wire clamp 34 and the upper fixing hole of the first wire clamp 33 are correspondingly arranged at a lower fixing hole, and the fastening bolt 35 penetrates from the upper fixing hole of the first wire clamp 33 to the lower fixing hole of the second wire clamp 34 and is fixed by the nut 36, thus the first wire clamp 33 is installed above the second wire clamp 34.

In other embodiments of the present utility model, a hinge shaft may be provided between the first wire clamp 33 and the second wire clamp 34, the first wire clamp 33 being rotatable about the hinge shaft, and the first wire clamp 33 and the second wire clamp 34 of the split spacer 33 being also convenient for fixing with the split conductor 4. Rubber pads may be fixed inside the first clamping groove 31 and the second clamping groove 32 of the split spacer 33, so as to protect the split conductor 4.

As shown in fig. 10, the split conductor 4 of the present utility model comprises a conductor insulation sleeve 41 and an overhead bare conductor 42, the conductor insulation sleeve 41 is provided with a cavity for the conductor to pass through, the overhead bare conductor 42 passes through from the cavity of the conductor insulation sleeve 41 so that the conductor insulation sleeve 41 is sleeved outside the overhead bare conductor 42, and two ends of the split conductor 4 are respectively connected with 35kV bushings 5.

As shown in fig. 11, in a second embodiment of the present utility model, a gap 43 through which an overhead bare conductor 42 passes is formed in a side wall of a conductor insulation sleeve 41, the conductor insulation sleeve 41 can be enlarged by opening the gap 43 so as to cover the conductor insulation sleeve 41 on the overhead bare conductor 42, a wavy bulge 45 is provided on an outer surface of the overhead bare conductor 42, a wire groove 44 matched with the outer surface of the overhead bare conductor 42 is formed in an inner wall of the conductor insulation sleeve 41, and the conductor insulation sleeve 41 is meshed with the wavy bulge 45 on the outer surface of the split conductor 4 through the wire groove 44 on an inner side, so that the split conductor 4 forms a force preventing the conductor insulation sleeve 41 from sliding downward. Secondly, the two corresponding wire insulation sleeves 41 on the two split wires 4 which are symmetrically distributed are also symmetrically distributed, the two symmetrically distributed wire insulation sleeves 41 provide equal and opposite acting forces through the split spacer 33, the wire insulation sleeves 41 can be guaranteed not to slide along the overhead bare wire 42, the purpose that the split spacer 33 cannot move along the overhead bare wire 42 is achieved, the wire grooves 44 are arranged to be distributed spirally along the inner wall of the wire insulation sleeve 41, the wire grooves are consistent with the spiral distribution of the overhead bare wire 42 in the split wires 4 along the steel core, when the overhead bare wire 42 is in the wire insulation sleeve 41, the effect is similar to that of a nut sleeved on a screw, and the wire insulation sleeve 41 can be difficult to slide along the overhead bare wire 42.

The foregoing description of the utility model has been presented for purposes of illustration and description, but is not intended to limit the scope of the utility model in any way, i.e., all changes and modifications that come within the meaning and range of equivalency of the utility model are to be embraced by the utility model.

Claims

1. An insulation protection device of split spacer for power transmission and transformation line, which is characterized in that: including the insulating protection device that has the split conductor spacer effect in the protection power transmission and transformation circuit, insulating protection device includes insulating protection sleeve and two insulating shrouding, two insulating shrouding are installed respectively at insulating protection sleeve's both ends, first double-layered groove and second double-layered groove have been seted up to the split conductor spacer, first double-layered groove and second double-layered groove mutual interval arrangement, the first double-layered groove and the second double-layered groove of split conductor spacer are equipped with two split conductors of symmetric distribution respectively, insulating protection sleeve parcel is at split conductor spacer and the outside of the split conductor that is located the split conductor nearby, has seted up first through-hole and second through-hole on every insulating shrouding, first through-hole and second through-hole mutual interval arrangement, and two split conductors pass first through-hole and second through-hole of every insulating shrouding respectively in order to install two insulating shrouding at insulating protection sleeve's both ends.

2. The insulation protection device for split spacers for power transmission and transformation lines according to claim 1, wherein: the insulation protection sleeve comprises an insulation protection sleeve and a cavity structure positioned in the insulation protection sleeve, wherein the insulation protection sleeve is provided with a sleeve opening used for allowing a split conductor and a split spacer to enter and exit the cavity structure, and the sleeve opening is communicated with the cavity structure.

3. The insulation protection device for split spacers for power transmission and transformation lines according to claim 2, wherein: the sleeve opening is equipped with buckle subassembly, buckle subassembly include a plurality of buckles of mutual interval arrangement and with buckle equiquantity and the corresponding card hole in position, buckle be located insulating casing one end and set up along sleeve opening axial, buckle extends to the other end from sleeve open-ended one end, the card hole is located insulating casing other end that the insulating casing position is opposite that the buckle is located, the buckle inserts in the card hole so that the fastening sleeve opening.

4. The insulation protection device for split spacers for power transmission and transformation lines according to claim 1, wherein: the split spacer comprises a first wire clamp and a second wire clamp, wherein the first wire clamp is arranged above the second wire clamp, the first wire clamp is provided with a first upper half-arc wire slot and a second upper half-arc wire slot, the opposite inner side surfaces of the second wire clamp and the first wire clamp are respectively provided with a first lower half-arc wire slot and a second lower half-arc wire slot, the first upper half-arc wire slot and the first lower half-arc wire slot are vertically communicated to form a first clamping slot, and the second upper half-arc wire slot and the second lower half-arc wire slot are vertically communicated to form a second clamping slot.

5. The insulation protection device for split spacers for power transmission and transformation lines according to claim 4, wherein: the split spacer comprises a fastening bolt and a fastening nut, wherein the first wire clamp is provided with an upper fixing hole, the second wire clamp and the first wire clamp are arranged at the lower fixing hole at the corresponding position of the upper fixing hole, and the fastening bolt penetrates through the lower fixing hole of the second wire clamp from the upper fixing hole of the first wire clamp and is fixed by the fastening nut.

6. The insulation protection device for split spacers for power transmission and transformation lines according to claim 1, wherein: the split conductor comprises a conductor insulation sleeve and an overhead bare conductor, wherein the conductor insulation sleeve is provided with a cavity for the conductor to pass through, and the overhead bare conductor passes through the cavity of the conductor insulation sleeve so that the conductor insulation sleeve is sleeved outside the overhead bare conductor.

7. The insulation protection device for split spacers for power transmission and transformation lines according to claim 6, wherein: and two ends of the split conductor are respectively connected with 35kV sleeves.